<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册页面</title>
</head>
<body>
<form action="/user" method="post">
    <input type="hidden" name="action" value="signin">
    <label for="username">username</label>
    <input type="text" name="username" id="username" placeholder="username"><br>
    <label for="password">password</label>
    <input type="password" name="password" id="password" placeholder="password"><br>
    <input type="submit" value="Register">
</form>
</body>
</html>